“After realizing that the landing gear did not deploy, the pilot circled the airport, trying several more times to get the wheels to come down.

Around 1 a.m., when it became clear that the gear would not work properly, the pilot brought the plane in on its belly.”

Here’s a video of the plane landing shortly after 1 AM eastern this morning.
The pilot certainly deserves a round of applause! US Airways may not serve meals on flights under three and half hours, but their pilots do know how to land planes.

@Jeremny: both US and UA have flights between PHL and EWR. These flights are for flyers with connecting flights; its unlikely that very many people buy a ticket for one of these flights just to travel between the two cities.